Got one to sell?

Got one to sell?

Get it in front of 160+ million buyers.

Motorcycle Speedometers

Motorcycle speedometers are the only instruments that tell you whether you're breaking the law or not. In a world of speed limits, it's no surprise that speedometers are not only large and legible, but also sit in clear view of the rider. Regardless of whether you have the original factory speedometer on your motorcycle or a third-party instrument, it's up to you to ensure its accuracy.

Speed and the Law

As of 1 July, 2006, all new motorcycle speedometers must be accurate to within 10 kmh of your speed but cannot read lower than your actual speed. In lay terms, that means your speedometer is almost certainly calibrated to read higher than the speed you're going. It's also important to know that as of that same date, it's up to the rider to ensure the accuracy of the speedometer. If the police pull you you over, it doesn't matter if your speedometer said you were going under the limit; you're responsible for knowing how fast you're going.

Speedometer Calibration

Speedometers work by counting the number of rotations your wheel makes in a given period of time. Multiply that by the circumference of your tyre, and you can figure out your speed. The catch here is that if you change the diameter of your tyre, you change the calibration of your speedometer. Simple changes of tyre pressure can change the reading up to 2 percent in either direction.

Speedometer Repair

You can usually only replace a digital speedometer; mechanical speedometers are a different story. In most cases, so long as the gauge is good, all you have to worry about is the cable. Worn or broken cables can wreak havoc on your speedometer accuracy. Luckily, it's not much work to change the speedometer cable. Just be sure to get everything out of the socket before you replace the square end of the cable. They are no harder to replace than any other motorcycle parts and accessories.

Speedometer Functions

Most motorcycle speedometers display two or more measurements; odometer motorcycle speedometers are very common, and tachometer motorcycle speedometers aren't that far behind.

Tell us what you think - opens in new window or tab